摘要
对所合成的ＰＨＢ／ＰＥＴ／ＨＱ－ＴＰＡ三元液晶共聚酯样品进行了热失重曲线测试。采用Ｆｒｅｅｍａｎ和Ｃａｎｒｄｌ的微商法对ＴＧ曲线所得到的主要数据进行了处理，研究了共聚芳酯样品的热分解动力学。结果表明，随着第三单体（ＨＱ－ＴＰＡ）加入量的提高，共聚芳酯的热稳定性提高。由微商法求出热分解反应级数ｎ＝１～３，反应活化能Ｅ＝１６７～２９３ｋＪ／ｍｏｌ。
The thermal gravimetric curves were determined for the synthesized liquid crystalline aromatic copolyester PHB/PET/HQ TPA. The major data obtained from the TG curves was treated with Freeman and Canrdles differential quotient method. The thermal degradation kinetics was studied for the samples. The results show that the thermal stability rises while the content of third monomer (HQ TPA) increases. The thermal degradation reaction grade n and activity energy E were counted using the differential quotient method. The results indicate that n is 1～3 and E is equal to 167～293 kJ/mol.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1996年第5期132-135,共4页
Polymer Materials Science & Engineering
关键词
液晶
共聚芳酯
热分解
动力学
芳香酯
聚乙烯
liquid crystalline aromatic copolyester, thermal degradation reaction kinetics, reaction grade, activity energy〖LM
